Tag：modeling
-
Python online retail data association rule mining Apriori algorithm data visualization
Original link: http://tecdat.cn/?p=23955 Association rule learningIn machine learning, it is used to find interesting relationships between variables. Apriori algorithm is a popular association rule mining and frequent itemset extraction algorithm, which is applied in association rule learning. It is designed to operate on databases containing transactions, such as purchases by store customers (basket analysis). In […]
-
[educational essays] primary school mathematics algebra and mathematical model construction processing and practical learning notes
Busy with work during the day without completing the task, make up for it at night Mathematical modeling is a method to solve various practical problems by establishing mathematical models, that is, through the abstraction and simplification of practical problems, determine variables and parameters, and apply some laws to establish the relationship between variables and […]
-
R language implementation copula algorithm modeling dependency case analysis report
Original link:http://tecdat.cn/?p=6193 Original source:Tuo end data tribal official account Copula is a function that couples multivariable distribution function with its edge distribution function, which is usually called edge. Copula is an excellent tool for modeling and simulating related random variables. The main attraction of Copula is that by using them, you can model the relevant […]
-
The aggregation of DDD is in Net
The aggregation of DDD is in Net (1) Work unit Dbcontext of efcore: track the change of object state; SaveChanges commits all changes to the database at once, which is a transaction. Therefore, dbcontext is a natural UOW implementation. (2) Implementation of aggregation and aggregation root Even if an entity type does not declare the […]
-
Suture skill learning of surgical robot based on teaching learning
Surgical assistant robot has the characteristics of accurate control, stable operation and high operation accuracy. It can help surgeons overcome the difficulties of traditional surgery in operation accuracy, workspace, distance and cooperative work. In order to make the surgical robot system realize high-quality automatic operation like doctors, an important basic work is to establish the […]
-
Experience sharing of 7 KDD Cup & kaggle Champions: from multi domain optimization to automl framework
The algorithm competition with fast feedback and fierce competition is an important way for algorithm practitioners to improve their technical level. The algorithm competition abstracted from several industry core problems has strong practical significance. Combined with the author’s champion experience in seven kaggle / KDD cups, this paper introduces three aspects: multi domain modeling optimization, […]
-
I only used three steps to achieve a realistic 3D scene rendering
How many steps does it take to render both texture and realistic material effects to 3D models and environmental scenes? Obviously, the current 3D model material rendering technology can not realize the standardized operation that can be done in a few steps to quantify. To complete a qualified 3D model rendering, generally: 1、Prepare a rich […]
-
Analytical micro aggregation – event tracing
This article is reproduced from [how to decouple]:https://codedecoupled.com/php… Aggregation is a relatively complex concept in DDD (Domain Driven Design). As an important tool in DDD tactical design, we need to know it well. Generally speaking, aggregation refers to a group of closely related classes that form a bounded organization. Objects outside the boundary can only […]
-
Strapi helps flutter develop international app – Data Modeling
With the powerful content management function of strapi, data modeling can be carried out freely. First, set the language types supported by strapiGLOBAL SETTINGS > Internationalization In this way, the strapi supports both Chinese and English Next useCONTENT TYPE BUILDERFunction modeling. Taking vegetables as an example, this paper establishes a data model of vegetables. Content-Types […]
-
[knowledge] technical framework and significance of data warehouse
1、 Significance of data warehouse Why data warehouseSpeaking of the significance of data warehouse, we must say the data problems faced by enterprises. Complex structure Dirty data perceptual difficulty Lack of history To sum up, it is the phenomenon of multi-source heterogeneous, dirty and poor data. Value embodiment of data warehouse effect diagnosis early warning […]
-
Explain in detail the “planning” ability of dataphin, the core product of data center
Introduction:Data center is an upgrade of traditional data warehouse and a complete set of system for data collection, construction, management and use. Dataphin is a powerful tool for building data center. Its core advantage is that it introduces onemodel methodology precipitated by Alibaba’s data center construction over the years in data construction and management. preface […]
-
Phase III: Data Warehouse
1、 Basic definition of data warehouse: 1. Data warehouse:Referred to as DW or DWH, it is a conceptual upgrade of database. It is created for the purpose of analytical reporting and decision support for the decision-making process at all levels of the enterprise. There are two main categories:(1) Operational database has the following characteristics: business […]